如何获得函数的返回错误值？ （反应本机）

Question

I create async/await(try...catch) in new function.

and I call this function in another component. then, I want to get only return error value and show error value.

How do I do it?

My Function:

const updateInformation = async () => {

try {
  const response = await updateAPI({
    variables: {
      data: {
        name: state.name,
        phoneNumber: state.phoneNumber,
      },
    },
  })
} catch (ex) {
  return Utils.extractErrorMessage(ex)
}
}

Component:

const onPressSendButton = () => {
if (name && address1 && address2 && phoneNum) {
  const r = updateInformation()
  // I want to show return error value in this line.
} else {
  return false
}
}

Answer 1

I made some changes, this should work (commented with explanations) :

Function

const updateInformation = async () => {
    return updateAPI({ // Missing return
        variables: {
            data: {
                name: state.name,
                phoneNumber: state.phoneNumber,
            },
        },
    });
};

Component

const onPressSendButton = async () => {
    if (name && address1 && address2 && phoneNum) {
        try {
            const r = await updateInformation(); // Need to await here
        } catch (e) {
            // This is where you handle the error
        }
    } else {
      return false;
    }
};